Mainz 2026 – scientific programme
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A: Fachverband Atomphysik
A 26: Poster – Ultracold Matter (joint session Q/A)
A 26.1: Poster
Wednesday, March 4, 2026, 17:00–19:00, Philo 2. OG
Pattern coarsening in dipolar quantum gases — •Andreea-Maria Oros1, Wyatt Kirkby1,2, Lauriane Chomaz2, and Thomas Gasenzer1,3 — 1Kirchhoff-Institut für Physik, Universität Heidelberg, Im Neuenheimer Feld 227 — 2Physikalisches Institut, Universität Heidelberg, Im Neuenheimer Feld 226 — 3Institut für Theoretische Physik, Universität Heidelberg, Philosophenweg 16
Ultracold dipolar gases have garnered increasing interest over the past years. The anisotropic and long-range character of the dipolar interaction and the stabilizing nature of the LHY correction give rise to supersolidity, superglasses, and exotic states of matter. Depending on the atom number, scattering length, and trapping geometry, different supersolid morphologies, such as triangular, honeycomb, and labyrinthine, have already been theoretically predicted to be the possible ground states of such a system. Our work expands on these phases by considering the out-of-equilibrium dynamics of a three-dimensional dipolar condensate, trapped only along the polarisation direction. Therein, we aim to bridge the theory of supersolid dipolar condensates to that of phase transitions present in melting dynamics. Furthermore, we investigate the crystalline properties across the superfluid-supersolid transition by extending procedures employed in Kosterlitz-Thouless-Halperin-Nelson-Young theories, and as a result observe coarsening behaviour in the local orientation.
Keywords: dipolar gases; far-from-equilibrium dynamics; supersolid; coarsening; non-thermal fixed points